Cement-directing orthopedic implants
First Claim
1. A device for use in treating orthopedic defects in a procedure comprising inserting the device into a pre-formed cavity within a bony member and injecting bone cement or other orthopedic filler material into an interior region of the device, said device comprising:
- a collapsible, self-expanding mesh structure configured to have a first, collapsed configuration and a second, expanded configuration, wherein said mesh structure is a co-braided structure and has regions of different permeability or flow resistance, wherein said mesh structure comprises primary members and secondary members occupying interstices between said primary members, and wherein said mesh structure includes a coating on at least a portion of the mesh structure configured to control the direction of the bone cement or other orthopedic filler material through the mesh structure.
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Accused Products
Abstract
A cement-directing structure for use in cement-injection bone therapy includes a collapsible, self-restoring braided structure with regions of differential permeability to the bone cement. The regions of differential permeability may be provided by areas where the braided mesh density is greater or lesser than surrounding areas and/or by means of a baffle. After the structure is placed in a void within a bony structure, cement is injected into the interior of the structure then oozes out in preferred directions according to the locations of the regions of differential permeability.
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Citations
16 Claims
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1. A device for use in treating orthopedic defects in a procedure comprising inserting the device into a pre-formed cavity within a bony member and injecting bone cement or other orthopedic filler material into an interior region of the device, said device comprising:
- a collapsible, self-expanding mesh structure configured to have a first, collapsed configuration and a second, expanded configuration, wherein said mesh structure is a co-braided structure and has regions of different permeability or flow resistance, wherein said mesh structure comprises primary members and secondary members occupying interstices between said primary members, and wherein said mesh structure includes a coating on at least a portion of the mesh structure configured to control the direction of the bone cement or other orthopedic filler material through the mesh structure.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for use in treating orthopedic defects in a procedure comprising inserting the device into a cavity within a bony member and injecting bone cement or other orthopedic filler material into an interior region of the device, said device comprising:
- a flexible mesh structure configured to move between a collapsed position and an expanded position, wherein the flexible mesh structure has sufficient rigidity to maintain walls of the cavity apart from each other in the expanded position;
wherein the mesh structure includes a coating on a portion of outer surface of the mesh structure to control the direction of the bone cement or other orthopedic filler material through the mesh structure, and wherein said mesh structure is a co-braided structure and has regions of different permeability or flow resistance. - View Dependent Claims (13, 14, 15, 16)
- a flexible mesh structure configured to move between a collapsed position and an expanded position, wherein the flexible mesh structure has sufficient rigidity to maintain walls of the cavity apart from each other in the expanded position;
Specification